Abstract
Rotational structures have been measured using the Jurogam II and GAMMASPHERE arrays at low spin following the and reactions at 25 and 65 MeV, respectively. We report high- bands, which are conjectured to be the first candidates of a vibrational band, built on the neutron orbital, in both odd- isotopes. The coupling of the first excited states or the so-called β vibrational bands at 661 and 676 keV in and to the orbital, to produce a band, was not observed in both and , respectively. The implication of these findings on the interpretation of the first excited states in the core nuclei and are also discussed.
2 More- Received 23 December 2019
- Accepted 18 March 2020
DOI:https://doi.org/10.1103/PhysRevC.101.044312
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